Gerät zum Versiegeln gegenüberstehenden aus thermoplastischen Beschichtungen oder Materialien bestehenden Oberflächen durch Oberflächenfusion und Verwendung eines sehr magnetostriktiven Pulverkomposites für diesen Zweck

摘要

The disclosure relates to an apparatus for the ultrasonic sealing of thermoplastic materials and comprises a vibration generator (2) of a so-called giant magnetostrictive powder composite (GMPC) which is secured in a jaw and has been given a cross-sectional area which progressively reduces seen from the anchorage point and whose free end displays a narrow working surface. The vibration generator (2) is surrounded by a coil (3) for generating a magnetic field.